Experimental Data Snapshot

  • Resolution: 2.48 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

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Crystal Structures of the Human Doublecortin C- and N-terminal Domains in Complex with Specific Antibodies.

Burger, D.Stihle, M.Sharma, A.Di Lello, P.Benz, J.D'Arcy, B.Debulpaep, M.Fry, D.Huber, W.Kremer, T.Laeremans, T.Matile, H.Ross, A.Rufer, A.C.Schoch, G.Steinmetz, M.O.Steyaert, J.Rudolph, M.G.Thoma, R.Ruf, A.

(2016) J Biol Chem 291: 16292-16306

  • DOI: https://doi.org/10.1074/jbc.M116.726547
  • Primary Citation of Related Structures:  
    5IKC, 5IN7, 5IO9, 5IOI, 5IP4

  • PubMed Abstract: 

    Doublecortin is a microtubule-associated protein produced during neurogenesis. The protein stabilizes microtubules and stimulates their polymerization, which allows migration of immature neurons to their designated location in the brain. Mutations in the gene that impair doublecortin function and cause severe brain formation disorders are located on a tandem repeat of two doublecortin domains. The molecular mechanism of action of doublecortin is only incompletely understood. Anti-doublecortin antibodies, such as the rabbit polyclonal Abcam 18732, are widely used as neurogenesis markers. Here, we report the generation and characterization of antibodies that bind to single doublecortin domains. The antibodies were used as tools to obtain structures of both domains. Four independent crystal structures of the N-terminal domain reveal several distinct open and closed conformations of the peptide linking N- and C-terminal domains, which can be related to doublecortin function. An NMR assignment and a crystal structure in complex with a camelid antibody fragment show that the doublecortin C-terminal domain adopts the same well defined ubiquitin-like fold as the N-terminal domain, despite its reported aggregation and molten globule-like properties. The antibodies' unique domain specificity also renders them ideal research tools to better understand the role of individual domains in doublecortin function. A single chain camelid antibody fragment specific for the C-terminal doublecortin domain affected microtubule binding, whereas a monoclonal mouse antibody specific for the N-terminal domain did not. Together with steric considerations, this suggests that the microtubule-interacting doublecortin domain observed in cryo-electron micrographs is the C-terminal domain rather than the N-terminal one.

  • Organizational Affiliation

    the Laboratory of Biomolecular Research, Department of Biology and Chemistry, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Neuronal migration protein doublecortin
A, B
105Homo sapiensMutation(s): 2 
UniProt & NIH Common Fund Data Resources
Find proteins for O43602 (Homo sapiens)
Explore O43602 
Go to UniProtKB:  O43602
PHAROS:  O43602
GTEx:  ENSG00000077279 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO43602
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.48 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.156α = 90
b = 82.156β = 90
c = 139.897γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SADABSdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
European Molecular Biology OrganizationSwitzerlandLongTerm Fellowship
Swiss National Science FoundationSwitzerland310030B_138659

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-23
    Type: Initial release
  • Version 1.1: 2016-05-18
    Changes: Database references
  • Version 1.2: 2016-06-08
    Changes: Database references
  • Version 1.3: 2016-08-10
    Changes: Database references
  • Version 1.4: 2016-12-14
    Changes: Structure summary
  • Version 1.5: 2017-09-06
    Changes: Author supporting evidence